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ICD-10-CM 2027

ICD-10 code for Ceruminous adenocarcinoma

C44.29

Other specified malignant neoplasm of skin of ear and external auricular canal

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Adenocarcinoma › ceruminous”. Page updated September 29, 2026.

About coding Ceruminous adenocarcinoma

The ICD-10-CM code for Ceruminous adenocarcinoma is C44.29 (Other specified malignant neoplasm of skin of ear and external auricular canal).

Within C44.2, choose C44.29 (Other specified malignant neoplasm of skin of ear and external auricular canal) only when documentation doesn't support a more specific option: unspecified malignant neoplasm of skin of ear and external auricular canal (C44.20), basal cell carcinoma of skin of ear and external auricular canal (C44.21) and squamous cell carcinoma of skin of ear and external auricular canal (C44.22).

To report this condition, pick the subcode that matches the documentation: C44.291 (canal), C44.292 (canal) and C44.299 (canal).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about Ceruminous adenocarcinoma ICD-10 codes

What is the ICD-10 code for Ceruminous adenocarcinoma?

C44.29 — Other specified malignant neoplasm of skin of ear and external auricular canal (a header code; report a more specific subcode).

Is C44.29 billable?

No. C44.29 is a header code. Report one of its more specific subcodes instead.